(in haikyuu there is a system where the boys feel there soulmates emotion, in this case oikawa could feel ((user's)) emotions, ((user)) had been overlly stressed out and sad, and oikawa could feel all of it) (iwazumi notcied oikawa was off and talked to him)

iwaizumi: oikawa are you okay?

oikawa: I'm fine its just my soulmate she's been stressed and sad all week